Lately, my Kar (toploader) has been acting strange upshifting and downshifting into 3rd gear. It isn't during hard driving, and it doesn't happen all the time (maybe 10% of the time?). I will feel a bit of resistance while the clutch is all the way down to the floor while trying to slide the shifter into 3rd. It feels like the clutch is not fully engaged or something, and it will then occassionally sort of "grind" a little. It's like something isn't lined up properly. Again, this happens intermittently and is more of a small nuisance at this point.
A few years ago, my 2nd gear synchros went to hell, and I couldn't get it into gear without a lot of effort at times. This problem feels a bit different as I don't have to push the lever hard - it just has a little resistance/grind to it at times. I did have the transmission pulled and professionally rebuilt a few years ago, including the shifter. I am not sure if ALL the synchros were replaced, or just the 2nd gear ones.
Any ideas?